package org.jeecg.common.util;

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

/*******************************************************************************
 * Description: 图片水印工具类 
 * Copyright: Copyright (c) 2011 
 * Company: Founder 
 * Project: CMS
 * 
 * @Author taoxg
 * @version 1.0
 * @See 
 * HISTORY 2011-9-27 taoxg create
 ******************************************************************************/
public class ImageMarkLogoUtil {
     
    // 水印透明度 
    private static float alpha = 1.0f;
    // 水印横向位置
    private static double positionWidth = 150;
    // 水印纵向位置
    private static double positionHeight = 300;
    // 水印文字字体
    private static Font font = new Font("微软雅黑", Font.BOLD, 23);
    // 水印文字颜色
    private static Color color = Color.red;
    /**
     * 
     * @param alpha 
     *          水印透明度
     * @param positionWidth 
     *          水印横向位置
     * @param positionHeight 
     *          水印纵向位置
     * @param font 
     *          水印文字字体
     * @param color 
     *          水印文字颜色
     */
    public static void setImageMarkOptions(float alpha , double positionWidth , double positionHeight ,Font font,Color color){
        if(alpha!=0.0f)ImageMarkLogoUtil.alpha = alpha;
        if(positionWidth!=0)ImageMarkLogoUtil.positionWidth = positionWidth;
        if(positionHeight!=0)ImageMarkLogoUtil.positionHeight = positionHeight;
        if(font!=null)ImageMarkLogoUtil.font = font;
        if(color!=null)ImageMarkLogoUtil.color = color;
    }
     

 
    /**
     * 给图片添加水印文字
     * 
     * @param logoText 
     *          水印文字
     * @param srcImgPath
     *          源图片路径
     * @param targerPath
     *          目标图片路径
     */
    public static void markImageByText(String logoText, String srcImgPath,
            String targerPath) {
        markImageByText(logoText, srcImgPath, targerPath, null);
    }
 
    /**
     * 给图片添加水印文字、可设置水印文字的旋转角度
     * 
     * @param logoText
     * @param srcImgPath
     * @param targerPath
     * @param degree
     */
    public static void markImageByText(String logoText, String srcImgPath,
            String targerPath, Integer degree) { 
        InputStream is = null;
        OutputStream os = null;
        try {
            // 1、源图片
        	double rateY = (960.0)/816.0;//1.3916256157635467
        	double rateX = 720.0/612.0; //1.1764705882352942
            Image srcImg = ImageIO.read(new File(srcImgPath));
            BufferedImage buffImg = new BufferedImage(srcImg.getWidth(null),srcImg.getHeight(null), BufferedImage.TYPE_INT_RGB);
            int imageX =612; // srcImg.getWidth(null);
            int imageY =816;// srcImg.getHeight(null)-170; 
            int printX = ((int) (imageX*positionWidth*rateX))<0?-12:(int) (imageX*positionWidth*rateX)-12;
            int printY = (int) (imageY*positionHeight*rateY)+75;
            // 2、得到画笔对象
            Graphics2D g = buffImg.createGraphics();
            // 3、设置对线段的锯齿状边缘处理
            g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,RenderingHints.VALUE_INTERPOLATION_BILINEAR);
            g.drawImage(srcImg.getScaledInstance(srcImg.getWidth(null), srcImg.getHeight(null), Image.SCALE_SMOOTH), 0, 0, null);
            // 5、设置水印文字颜色  
            g.setStroke(new BasicStroke(6f));
            g.setColor(new Color(251,56,56));
            g.drawOval(printX,printY,100,70);
            
            // 9、释放资源
            g.dispose();
            // 10、生成图片
            os = new FileOutputStream(targerPath);
            ImageIO.write(buffImg, "JPG", os);
 
            System.out.println("图片完成添加水印文字");
             
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (null != is)
                    is.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
            try {
                if (null != os)
                    os.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
     
    public static void main(String [] args){
    //	setImageMarkOptions(1.0f,0.3569,0.7865,null,null);
       	setImageMarkOptions(1.0f,0.2500,0.1792,null,null);       	
        String srcImgPath = "d:/qie.jpg";  
        String logoText = "V03";
        String targerTextPath = "d:/qie_text.jpg";  
         
        System.out.println("给图片添加水印文字开始...");
        // 给图片添加水印文字  
        markImageByText(logoText, srcImgPath, targerTextPath);  
     //   markImageByIcon(null,srcImgPath,targerTextPath);
        // 给图片添加水印文字,水印文字旋转-45  
        System.out.println("给图片添加水印文字结束...");
         
    }
 
}